warning LEXUS RCF 2019 Owners Manual

241
4
Driving
RC F_U 4-4. Refueling
●
Close both side doors and windows, and turn the engine switch off.●
Confirm the type of fuel. ■
Fuel types
 P. 554 ■
Fuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your vehi cle has a fuel tank opening that only accom-
modates the specia l nozzle on unleaded fuel pumps.
Opening the fuel tank cap Perform the following steps to open the fuel tank cap:
Before refueling the vehicle
WARNING ■
When refueling the vehicle
Observe the following precautions while refueling the vehicle. Failure to do so may
result in death or serious injury. ●
After exiting the vehicle and before opening the fuel door, touch an unpainted metal
surface to discharge any static electricity. It is important to discha rge static electricity
before refueling because sparks resulting fr om static electricity can cause fuel vapors
to ignite while refueling. ●
Always hold the grips on the fuel tank cap and turn it slowly to remove it.
A whooshing sound may be heard when the fu el tank cap is loosened. Wait until the
sound cannot be heard before fully removing the cap. In hot weather, pressurized fuel
may spray out the filler neck and cause injury.●
Do not allow anyone that has not discharged static electricity from their body to come
close to an open fuel tank. ●
Do not inhale vaporized fuel.
Fuel contains substances th at are harmful if inhaled.●
Do not smoke while refueling the vehicle.
Doing so may cause the fuel to ignite and cause a fire. ●
Do not return to the vehicle or touch any pe rson or object that is statically charged.
This may cause static electricity to build up, resulting in a possible ignition hazard.■
When refueling
Observe the following precautions to prevent fuel overflowing from the fuel tank: ●
Securely insert the fuel nozz le into the fuel filler neck.●
Stop filling the tank after the fuel nozzle automatically clicks off.●
Do not top off the fuel tank.

244 4-4. Refueling
RC F_U After refueling, turn the fuel tank cap
until you hear a click. Once the cap
is released, it will turn slightly in the
opposite direction.
Close the fuel filler door, and press
the center of the rear edge of the
fuel filler door until you hear a click. When you lock the doors, the fuel filler
door will also lock. ■
When closing the fuel filler door
Do not lock the doors before closing the fuel filler door, as the fu el filler door cannot be
closed if the doors are locked. If the doors are locked and the fuel filler door cannot be
closed, unlock the doors and then close the fuel filler door. ■
Fuel filler door lock condition
The fuel filler door may not be locked even when the vehicle’ s doors are locked in the fol-
lowing situations: ●
When operating the door lock button inside the vehicle●
When the automatic door lock ing system is operated (  P. 148)Closing the fuel tank cap 1
2
WARNING ■
When replacing the fuel tank cap
Do not use anything but a genuine Lexus fuel tank cap designed for your vehicle. Doing
so may cause a fire or other incident whic h may result in death or serious injury.

245
4
Driving
RC F_U 4-5. Using the driving support systems
◆ PCS (Pre-Collision System)
 P. 250
◆ LDA (Lane Departure Alert with steering control)
 P. 261
◆ Automatic High Beam
 P. 228
◆ Dynamic radar cruise control
 P. 268Lexus Safety System+ The Lexus Safety System+ consists of the following drive assist systems and
contributes to a safe and comfo rtable driving experience:
WARNING ■
Lexus Safety System+
The Lexus Safety System+ is designed to operate under the assumption that the driver
will drive safely, and is design ed to help reduce the impa ct to the occupants and the
vehicle in the case of a collision or assist the driver in normal driving conditions.
As there is a limit to the degree of reco gnition accuracy and control performance that
this system can provide, do not overly rely on this system. The driver is always responsi-
ble for paying attention to the vehicl e's surroundings and driving safely.

2474-5. Using the driving support systems
4
Driving
RC F_U Two types of sensors, located behind the front grille and windsh ield, detect infor-
mation necessary to operate the drive assist systems.
Radar sensor
Camera sensorSensors 1
2
WARNING ■
To avoid malfunction of the radar sensor
Observe the following precautions.
Otherwise, the radar sensor may not operat e properly, possibly leading to an accident
resulting in death or serious injury. ●
Keep the radar sensor and front grille emblem clean at all times.
●
Do not attach accessories, stickers (includi ng transparent sticke rs) or other items to
the radar sensor, front grille emblem or surrounding area. ●
Do not subject the radar sensor or su rrounding area to a strong impact.
If the radar sensor, front grille, or front bumper has been subjected to a strong impact,
have the vehicle inspected by your Lexus dealer. ●
Do not disassemble the radar sensor. ●
Do not modify or paint the radar sensor, front grille emblem or surrounding area. ●
If the radar sensor, front grille, or front bumper needs to be removed and installed, or
replaced, contact your Lexus dealer. Radar sensor
Front grille emblem
If the front of the rada r sensor or the front or
back of the front grille emblem is dirty or
covered with water droplets, snow, etc., clean
it.
Clean the radar sensor and front grille
emblem with a soft cloth so you do not mark
or damage them. 1
2

248 4-5. Using the driving support systems
RC F_U WARNING ■
To avoid malfunction of the camera sensor
Observe the following precautions.
Otherwise, the camera sensor may not oper ate properly, possibly leading to an acci-
dent resulting in deat h or serious injury.●
Keep the windshield clean at all times.
• If the windshield is dirty or covered with an oily film, water droplets, snow, etc.,
clear the windshield.
• If a glass coating agent is applied to the wi ndshield, it will still be necessary to use
the windshield wipers to remove water droplets, etc. from the area of the wind-
shield in front of the camera sensor.
• If the inner side of the windshield where th e camera sensor is installed is dirty, con-
tact your Lexus dealer.
●
If the part of the windshield in front of the camera sensor is fogged up or covered with
condensation or ice, use the windshield de fogger to remove the fog, condensation or
ice. (  P. 338)●
If water droplets cannot be properly removed from the area of the windshield in front
of the camera sensor by th e windshield wipers, replace the wiper insert or wiper
blade.
If the wiper inserts or wiper blades need to be replaced, contact your Lexus dealer.●
Do not attach objects, such as stickers, trans-
parent stickers, and so forth, to the outer side
of the windshield in front of the camera sensor
(shaded area in the illustration).
A: From the top of the windshield to approxi-
mately 0.4 in. (1 cm) below the bottom of the
camera sensor
B: Approximately 7.9 in. (20 cm) (Approxi-
mately 4.0 in. [10 cm] to the right and left
from the center of the camera sensor)

2494-5. Using the driving support systems
4
Driving
RC F_U WARNING ●
Do not attach window tinting to the windshield. ●
Replace the windshield if it is damaged or cracked.
If the windshield needs to be re placed, contact your Lexus dealer.●
Do not get the camera sensor wet. ●
Do not allow bright lights to shine into the camera sensor.●
Do not dirty or damage the camera sensor.
When cleaning the inside of the windshield , do not allow glass cleaner to contact the
lens. Also, do not touch the lens.
If the lens is dirty or damaged, contact your Lexus dealer. ●
Do not subject the camera sensor to a strong impact. ●
Do not change the installation position or direction of the camera sensor or remove it.●
Do not disassemble the camera sensor. ●
Do not modify any components of the vehi cle around the camera sensor (inside rear
view mirror, et c.) or ceiling.●
Do not attach any accessories that may obst ruct the camera sensor to the hood, front
grille or front bumper. Contact your Lexus dealer for details.●
If a surfboard or other long object is to be mounted on the roof, ma ke sure that it will
not obstruct the camera sensor. ●
Do not modify the head lights or other lights.

250 4-5. Using the driving support systems
RC F_UPCS (Pre-Collision System) The pre-collision system uses a radar sensor and camera sensor to detect
vehicles and pedestrians in front of yo ur vehicle. When the system determines
that the possibility of a frontal collision with a vehicle or pedestrian is high, a
warning operates to urge the driver to take evasive action and the potential
brake pressure is increased to help the driver avoid the collision. If the system
determines that the possibility of a fr ontal collision with a vehicle or pedes-
trian is extremely high, the brakes are automatically applied to help avoid the
collision or help reduce the impact of the collision.
The pre-collision system can be disabled/enabled and the warning timing can
be changed. (  P. 254)

2514-5. Using the driving support systems
4
Driving
RC F_U ◆ Pre-collision warning
When the system determines that
the possibility of a frontal collision is
high, a buzzer will sound and a warn-
ing message will be displayed on the
multi-information display to urge the
driver to take evasive action.
◆ Pre-collision brake assist
When the system determines that the po ssibility of a frontal collision is high,
the system applies greater braking force in relation to how strongly the brake
pedal is depressed.
◆ Pre-collision braking
When the system determines that the po ssibility of a frontal collision is high,
the system warns the driver. If the syst em determines that the possibility of a
frontal collision is extremely high, the br akes are automatically applied to help
avoid the collision or reduce the collision speed.
◆ Suspension control (if equipped)
When the system determines that the po ssibility of a frontal collision is high,
the Adaptive Variable Suspension System (  P. 313) will control the damping
force of the shock absorbers to help ma intain an appropriate vehicle posture.
◆ Steering control (if equipped)
When the system determines that the possibility of a frontal collision is high
and the driver is operating the steering wheel, the LDH system (  P. 313) will
control the turning angle of the front an d rear wheels and effort necessary to
turn the steering wheel to help enhance steering responsiveness.

252 4-5. Using the driving support systems
RC F_U WARNING ■
Limitations of the pre-collision system●
The driver is solely responsible for safe driving. Always drive safely, taking care to
observe your surroundings.
Do not use the pre-collision sy stem instead of normal braking operations under any
circumstances. This system will not preven t collisions or lessen collision damage or
injury in every situation. Do not overly rely on this system. Failure to do so may lead to
an accident, resulting in death or serious injury. ●
Although this system is designed to help avoid a collision or help reduce the impact of
the collision, its effectivenes s may change according to various conditions, therefore
the system may not always be able to achieve the same level of performance.
Read the following conditions carefully. Do not overly rely on this system and always
drive carefully.
• Conditions under which the system may oper ate even if there is no possibility of a
collision:  P. 256
• Conditions under which the system may not operate properly:  P. 258●
Do not attempt to test the operation of the pre-collision system yourself, as the system
may not operate properly, possib ly leading to an accident.■
Pre-collision braking ●
When the pre-collision braking function is operating, a large amount of braking force
will be applied. ●
If the vehicle is stopped by the operation of the pre-collision braking function, the pre-
collision braking function operation will be canceled after approximately 2 seconds.
Depress the brake pedal as necessary. ●
The pre-collision braking fu nction may not operate if certain operations are per-
formed by the driver. If the accelerator pedal is being depressed strongly or the steer-
ing wheel is being turned, the system may de termine that the driver is taking evasive
action and possibly prevent the pre-coll ision braking function from operating.●
In some situations, wh ile the pre-collision braking function is operating, operation of
the function may be canceled if the accele rator pedal is depressed strongly or the
steering wheel is turned and the system de termines that the driv er is taking evasive
action. ●
If the brake pedal is being depressed, the sy stem may determine that the driver is tak-
ing evasive action and possibly delay the op eration timing of the pre-collision braking
function.

2534-5. Using the driving support systems
4
Driving
RC F_U WARNING ■
When to disable the pre-collision system
In the following situations, di sable the system, as it may not operate properly, possibly
leading to an accident resultin g in death or serious injury:●
When the vehicle is being towed ●
When your vehicle is towing another vehicle ●
When transporting the vehicle via truck, bo at, train or similar means of transportation●
When the vehicle is raised on a lift with the engine running and the tires are allowed to
rotate freely ●
When inspecting the vehicle using a drum tester such as a chassis dynamometer or
speedometer tester, or when using an on vehicle wheel balancer ●
When a strong impact is applied to the fron t bumper or front grille, due to an accident
or other reasons ●
If the vehicle cannot be driven in a stable manner, such as when the vehicle has been
in an accident or is malfunctioning ●
When the vehicle is driven in a sporty manner or off-road●
When the tires are not properly inflated ●
When the tires are very worn ●
When tires of a size other than specified are installed ●
When tire chains are installed ●
When a compact spare tire or an emergency tire puncture repair kit is used ●
If equipment (snow plow, etc.) that may obstruct the radar sensor or camera sensor is
temporarily installed to the vehicle